What did Wilson-Raybould say?

Former attorney general and justice minister Ms Wilson-Raybould said last week that she had faced attempts at interference and "veiled threats" from the prime minister and members of his inner circle over a corruption trial facing Quebec-based engineering giant SNC-Lavalin.

She said she was subjected to repeated pressure over four months late last year to "find a solution" for the firm, and that she was warned about the impact a trial could have on an upcoming Quebec election.

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Former justice minister Jody Wilson-Raybould says she was pressured by the prime minister

In Canada, the attorney general is supposed to exercise independent prosecutorial discretion, without any political interference.

She directly accused Mr Butts of meddling with her role. She said Mr Butts told her chief of staff: "There is no solution here that doesn't involve some interference".

She also accused Mr Wernick, who is Privy Council Clerk, of threatening her. She said he told her the PM would "find a way to get it done one way or another".

What did Trudeau's closest ally say?

Mr Butts - one of Mr Trudeau's oldest friends - had a very different description of the conversations the prime minister and various officials had with Ms Wilson-Raybould with regards to the firm's prosecution.

Speaking on Wednesday for the first time before a House of Commons Justice Committee, Mr Butts said: "People can come away from the same experience with different impressions."